This inventor holds 4 USPTO granted patents. Top assignees: Asahi Chemical Research Laboratory Co., Ltd., Daito Communication Apparatus Co., Ltd.. Active years: 1989-1994.
Company Filing History:
3 out of 10 
1 out of 11 Years Active: 1989-1994
Title: **The Innovative Contributions of Isao Morooka**
Introduction
Isao Morooka, an accomplished inventor based in Hachioji, Japan, has made significant contributions to the field of electronics and materials science. With a remarkable portfolio of four patents, his work showcases a commitment to innovation and a deep understanding of the intricacies involved in developing advanced technologies.
Latest Patents
Morooka's latest patents highlight his expertise in the development of effective electronic devices. One notable invention is a PTC (Positive Temperature Coefficient) device that employs two electrodes affixed to opposed surfaces. These electrodes consist of a metal foil with a conductive layer that has a thermal coefficient of expansion intermediate between that of the metal foil and the PTC material. This innovative design prevents the peeling of electrodes from the PTC element due to temperature fluctuations, ensuring reliable performance during repeated voltage applications. Furthermore, the improved adhesion of the electrodes reduces resistance changes after repeated temperature cycling, showcasing Morooka's focus on durability and efficiency.
Another significant patent is an electromagnetic wave shielding composition, which includes an epoxy resin and a detailed production method for an electromagnetic wave shielding circuit. This circuit comprises a base board, an electric circuit formed on it, and various coatings that effectively discharge electromagnetic wave currents produced in the circuit. By utilizing a copper-particle-containing coating hardened through heating, this invention represents a advancement in managing electromagnetic interference in electronic devices.
Career Highlights
Isao Morooka has held important roles at several prominent companies, including Asahi Chemical Research Laboratory and Daito Communication Apparatus. His work at these institutions has been pivotal in propelling innovation and addressing complex challenges in electronics and communication technologies.
Collaborations
Throughout his career, Morooka has collaborated with various experts in the field. Notable coworkers like Yoichi Oba and Yamahiro Iwasa have contributed to his projects, helping to enhance the quality and impact of his inventions.
Conclusion
In conclusion, Isao Morooka stands out as a notable inventor whose contributions to technology have not only advanced product capabilities but also improved the efficiency and reliability of electronic devices. His innovative spirit and dedication to research continue to inspire the engineering community, making a lasting impact on future developments in the field.